The GM8 Dec Axis is for your GM8 or GM811 DEC. This is the Dec axis only as a replacement/addition.
The upgrade does not include a motor - you use your existing servo axis motor and attach it to the G11 DEC. If you prefer not to use your existing motor, you will need to purchase an additional motor available in our store
It is a spring-loaded worm on the GM8 DEC axis
